Valve for wood-pulp digesters or similar devices.



N0. 668,946. Patented Feb. 26, I90l. J. H. BAKER, G. F. SHEVLIN & F. H. BAKER. VALVE FOR WOOD PULP DIGESTEBS 0R SIMILAR DEVICES.

(Application filed Feb 15 1900.) (No Model.) 2 Sheets-Shae! l.

N0. 668,946. I I Patented Feb. 26, I90l. J. H. BAKER, F. SHEVLIN &. F. H. BAKER. VALVE FUR WOOD PULP DIGESTERS 0R SIMILAR DEVICES.

2 ShsstsSheet 2.

(Application filed Feb 1 5, 1900. (N o M o d a l Nrrnn STATES ATENT OFFICE.

JAMES H. BAKER, GEORGE E. SHEVLIN, AND FREDERICK H. BAKER, OF SARATOGA SPRINGS, NE\V YORK.

VALVE FOR WOOD-PULP DIGESTERS OR SIMILAR DEVICES.

SPECIFICATION forming part of Letters Patent No. 668,946, dated February 26, 1901.

Application filed February 16, 1900. Serial No. 5,245. (No model.)

To a, whom, it may concern: with an integral interiorly-threaded hub Z Be it known that we, JAMES H. BAKER, for the threaded portion of the valve-stem 55 GEORGE F. SHEVLIN, and FREDERICK H. BA- 0, and the said valve-stem c is made with a KER, citizens of the United States, residing ,head 0 at the lower end, and a nut d fits 5 at Saratoga Springs, in the county of Saraaround the valve-stem 0 adjacent to the head toga and State of New York, have invented c and the valve-disk 6 receives the head 0 an Improvement in Valves for VVood-Pulp and the nut d, the nut (Z screwing into the b0 Digesters or Similar-Devices, of which the folopen end of the valve-disk, so as to hold the lowing is a specification. head of the valve-stem freely within the same,

10 Our invention relates to an improvement so that the said head and stem can turn within valves having renewable parts, and which out turning the valvedisk as the same is valves are especially adapted for use in mills screwed to place in closing the valve. 5 preparing; wood-pulp for paper-making and in 'lllre valneiacefiispreferably of acid-proof mills where acid is used in the operations of metal tmd both the valve-face and the body I5 the digester to obviate the difficulties and exof the valve may, if desired, be made of pense heretofore experienced in the removal bronze metal. ihgggmgiawfimthexalveor renewal of such valves or their parts, as disk eis made with giltlihb.li iledlr.ecesses-2 and 7o heretofore with these valves it has been nectheadjgijlii' cc of the valve-face fie essary to take the valve-body out of its posiiiiade with s ese parts fittion in the line of piping in order to renew tifig't'iglitly together, so that by tli'esaid dovethe valve, and our invention is designed to tailedfi'ibsaiid recessesthevalve-face f is obviate these difficulties. held to the valve-disk e. The periphery of e employ a valve having a body in the the said valve-face is tapering, as is also the line of piping, and which body preferably iuadjacent corner of the removable valve-seat 25 cludes a cylindrical portion receiving the g, against which the tapering surface of the valve and valve-stem and to which a removvalve-face fits when the valve is closed. able bonnet is secured. We make use of a The valve-seat g rests against a shoulder in removable valve-seat and a nalnmlahlelailles the valve-body at the base of the inclined por- ..face,-preferably of acid-proof metal, and also tion of the valve-body, and we provide a re- 30 a removable sleeve within the body of the movable sleeve h, adapted to be passed into valve and a removable nut screwing into the the inclined portion of the valve-body with open end of the body against the said sleeve, its lower edge against the valve-seat g, and with the sleeve in turn bearing upon and forthe said removable sleeve is provided with an cibly holding to place the valve-seat of the opening 4, agreeing with the opening in the 35 valve. valve-body and providingapassage from one The details of the device and the mode of end of the valve-body through the valve-seat operation are hereinafter more particularly 9 into the removablesleeve h through its described. opening 4 into the other portion of the valve- In the drawings, Figure 1 is a vertical secbody, and this removable sleeve his provided 40 tion and partial elevation representing our withalug 5 adjacent to its upper edge, which improvement. Fig. 2 is an end view of the lug enters a recess 7 in the valve-body a, and sleeve. Fig. 3 is an end view of the clampthe upper end of the valve-body adjacent to ing-nut. Fig. -l is an inverted plan of the the flange a is interiorly threaded to receive valve'face, and Fig. 5 is a vertical section and the nut t, which screws therein and comes 5 partial elevation representingaslightly-modidown upon the removable sleeve h, and this fied form of valve. nut i is provided with holes 6 for a spanner,

The valve-body a is provided with flanges which screws the same to place and forces ct to connect the same in the line of piping the removable sleeve 71 against the valve-seat from the digester or other structure, and this g to hold the same in position. The lug 5 of 50 valve-body includes the cylindrical inclined the sleeve h in the recess 7 of the body a preportion having a flange a The bonnet h of vents the action of the nutz'turning the sleeve the valve rests upon and is securely bolted h as the said nut is screwed to place. to the flange a and the said bonnet is made The bonnet b is made with a stufling-box h. n k g and gland 7c, through-Which the valve-stem 0 passes, the said stuffing-box forming a closure around the valve to prevent the escape of the liquid passing through the valve and connecting-pipes. In the operation of the parts the rotation of the valve-stem c in one direction forces the face of the valve against the seat 9 to clpse the same, and in the other direction the valve is lifted from the seat to any desired extent, so as to permit the free passage of the liquid or pulp material from the digester in the paper-mill. When the valve becomes more or less worn, leaky, or useless and it is desirable to replace any one or more of the parts, the bonnet b is readily removed by unscrewing the bolts or nuts securing the same to the flange 0, and with the removal of the bonnet the valve-stemc, the nut 61, the valve-disk e, and the face f all come away from the valve-body. The nut d may be unscrewed from the disk e and the face fremoved from the disk 6, so that any of these parts thus exposed may be readily renewed.

With the parts just named removed from the valve-body a spanner may be employed to engage the nut 2', unscrew the same, and back it out of the valve-body. The removable sleeve h is then readily lifted out of the valve-body and access obtained to the valveseat g for its removal. New parts can then be inserted in place of the said parts removed and the valve and bonnet replaced ready for use Without in any sense disturbing the valvebody a, in the line of piping.

In the modification, Fig. 5, we have shown slight changes to the form of valve. In this form the valvebody between the flanges a is shortened considerably and the inclined portion slightly lengthened, the flanges a being dispensed with. The bonnet is made narrower and with a depressed center for the stuffing-box gland 7c and shouldered to set upon and slightly Within the edge of the inclined part of the body a. The threaded portion a of the stem is thus kept out of the gland 7c, and the acid-proof valve-face f is made with one dovetailed ijbj connecting the same to the valve dTsk e. The open end of the inclined portion of the valve-body is more deeply recessed and threaded and the removable sleeve h thereby shortened in length.

' We claim as our invention 1. The combination With the valve-body in a line of piping having an inclined portion and flange, of a bonnet adapted to be connected to the flange of the inclined portion of the body, a threaded valve-stem, a packinggland therefor connected to the bonnet, a removable valve and face connected to the said valve-stem, a removable valve-seat and a re movable sleeve and nut for clamping the sleeve and seat in place in the body, substantially as set forth.

2. The combination with the valve-body in a line of piping having an inclined portion and flange, of a bonnet adapted to be connected to the flange of the inclined portion of the body, a threaded valve-stem, a packinggland therefor connected to the bonnet and an interiorly-threaded portion of said bonnet through which the said valve-stem passes, a removable valve and face connected to the said valve-stem, a removable valve-seat, a removable sleeve and a nut for clamping the sleeve and seat in place in the body, substantially as set forth.

3. The combination in a valve with the body in the line of piping, and-having an interiorlythreaded open end, of the valve-stem having an enlargement or head at its inner end, a valve-disk receiving the said head and a nut for securing the stem to the valve-disk, a removable valve-face, a removable valve-seat in the valve-body, a removable sleeve having an opening, means for preventing the said sleeve rotating in the body and a nut screwing into the interiorly-threaded open end of the body to hold the said sleeve and the removable valve-seat to place, substantially as set forth.

at. The combination in a valve with a body in the line of piping having an inclined portion and flange, of the valve-stem having an enlargement or head at its inner end, a valvedisk receiving the same and a nut upon the valve-stem for connecting the disk and stem, the outer face of the disk having transverse dovetailed recesses, a valve-face having transverse dovetailed ribs fitting the said recesses to connect the valve-face to the disk, a seat for the valve and devices for holding the valveseat to'place and permitting. of the removal of the same, substantially as set forth.

5. The combination in a valve with a body in the line of piping having an inclined portion and flange, of the valve-stem having an enlargement or head at its inner end, a valvedisk receiving the same and a nut upon the valve-stem for connecting the disk and stem, the outer face of the disk having transverse dovetailed recesses, a valve-face having transverse dovetailed ribs fitting the said recesses to connect the valve-face to the disk, a removable valve-seat resting upon a shoulder in the body of the valve and between which and the valve-face there are inclined meeting faces, a removable sleeve in the body of the valve having an opening providing for the passage of material through the valve-body, a lug on the upper end of the said removable sleeve engaging a recess in the valve-body a nut screwing into the open end of the valve-body down upon the removable sleeve for holding the sleeve and the valve-seat in place in the valve'body, substantially as set forth.

Signed by us this 5th day of February, 1900.

JAMES H. BAKER. GEO. F. SHEVLIN. FREDERICK H. BAKER.

Witnesses:

J. W. CRANE, JOHN S. BARBORN. 

